#66DAF2#66DAF2

#66DAF2 is a very light, moderate cyan. Relative luminance 0.594; OKLCH L 83.0% C 0.109 H 213.3°. Best body text is #000000 at 12.88:1 contrast (WCAG AA passes).

Color values

HEX	#66DAF2
RGB	rgb(102, 218, 242)
HSL	hsl(190, 84%, 67%)
HSV	hsv(190, 58%, 95%)
CMYK	cmyk(57.9%, 9.9%, 0%, 5.1%)
CIE-LAB	lab(81.50, -26.06, -21.66)
CIE-LCH	lch(81.50, 33.89, 219.73°)
OKLab	oklab(83.03% -0.0915 -0.06)
OKLCH	oklch(83.03% 0.109 213.3)
XYZ	xyz(46.5714, 59.3738, 92.9932)
Luminance	0.5938 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DAF2 #F27E66

analogous

#66F2C4 #66DAF2 #6694F2

triadic

#66DAF2 #F266DA #DAF266

tetradic

#66DAF2 #C466F2 #F27E66 #94F266

square

#66DAF2 #C466F2 #F27E66 #94F266

split-complementary

#66DAF2 #F26694 #F2C466

monochromatic

#11ACCC #2ECCED #66DAF2 #9EE8F7 #D7F5FC

Accessibility & contrast

On white

1.63

#66DAF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.88

#66DAF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DAF2

12.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DAF2	#FFFFFF	#000000	##000000
##66DAF2	1.00	1.63	12.88	12.88
#FFFFFF	1.63	1.00	21.00	21.00
#000000	12.88	21.00	1.00	1.00
##000000	12.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8D3F3

Deuteranopia (green-blind)

#B3C4F2

Tritanopia (blue-blind)

#00E4E1

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #66daf2;
/* rgb */ color: rgb(102, 218, 242);
/* oklch */ color: oklch(83.0% 0.109 213.3);

Tailwind

colors: {
  custom: {
    50: '#9ee5f6',
    500: '#66daf2',
    950: '#000000',
  },
}

SCSS

$custom: #66daf2;
$custom-light: #9ee5f6;
$custom-dark: #000000;

JSON

{
  "hex": "#66daf2",
  "rgb": {
    "r": 102,
    "g": 218,
    "b": 242
  },
  "hsl": {
    "h": 190.286,
    "s": 84.337,
    "l": 67.451
  },
  "oklch": {
    "l": 0.83029,
    "c": 0.10947,
    "h": 213.3
  },
  "luminance": 0.59378
}

Semantic roles & 50–950 ramp

primary

#66DAF2

secondary

#C94D34

accent

#2A05E1

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1617

muted

#808485

Preview Lab

Preview with #66DAF2

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →